{"schema":"threatline.record/2","record":{"id":"CVE-2026-109756","aliases":[],"summary":"Privilege escalation in the DOM: Navigation component","details":"Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 158, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","categories":["Applications & CMS"],"product":"Firefox","vendor":"Mozilla","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109756","source_modified_at":"2026-10-14T03:59:04.701Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Firefox","vendor":"Mozilla","versions":[{"status":"unaffected","version":"153.5","lessThanOrEqual":"153.*","versionType":"rpm"},{"status":"unaffected","version":"158","lessThanOrEqual":"*","versionType":"rpm"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-109756","source_modified_at":"2026-10-14T03:59:04.701Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"153.5","lessThanOrEqual":"153.*","versionType":"rpm"},{"status":"unaffected","version":"158","lessThanOrEqual":"*","versionType":"rpm"}],"defaultStatus":null}],"fixed_versions":[],"cvss":8.8,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00323,"percentile":0.24145,"score_date":"2026-10-23"},"published_at":"2026-10-13T12:29:30.297Z","modified_at":"2026-10-14T03:59:04.701Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-109756","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T03:59:04.701Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-109756","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2069258"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-106/"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-108/"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-109/"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2026-110/"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-10-13T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-14T03:59:04.701Z","content_hash":"2e5160da3c1102e1e6fdc7d069032160e88aa67718d8871838e803b806d5eb8d"}}